Paiva A.O.,Conservacao Internacional |
Rezende A.V.,University of Brasilia |
Pereira R.S.,University of Brasilia
Revista Arvore | Year: 2011
The objective of this study was to estimate the carbon stock of the aerial section (stems, branches and litter) and belowground (roots and soil) of woody vegetation in a cerrado sensu stricto located on Água Limpa Farm, at University of Brasilia, Federal District, Brazil. The studied area was sampled from 20 x 50m plots, allocated systematically. In each plot, it was uplifted all the woody shrubby-arboreous individuals, being live and stand dead, with at least 5 cm of diameter taken at 30 cm from the ground level. It was also performed collections of litter biomass, roots biomass (fine, medium and thick) and density and soil carbon concentration. The maximum depth adopted for collection of belowground section was 2 meters. Most of the carbon corresponded to soil compartment (88.7%), which was much more than the roots (7.3%), where the concentrations were 271.23 and 22.38 tons per hectare, respectively. Stems and branches totalized 8.60 tons of carbon per hectare and litter, 3.62 tons of carbon per hectare.
Schroth G.,Federal University of Para |
Faria D.,State University of Santa Cruz |
Araujo M.,Institute Estudos Socioambientais do Sul da Bahia IESB |
Bede L.,Conservacao Internacional |
And 6 more authors.
Biodiversity and Conservation | Year: 2011
A recent debate has contrasted two conservation strategies in agricultural landscapes; either "land sparing" farm development combining intensive production practices with forest set-asides, or "wildlife-friendly" farming with greater on-farm habitat value but lower yields. We argue that in established mosaic landscapes including old cacao production regions where natural forest has already been reduced to relatively small fragments, a combination of both strategies is needed to conserve biodiversity. After reviewing the evidence for the insufficiency of either strategy alone if applied to such landscapes, the paper focuses on the cacao production landscape of southern Bahia, Brazil, once the world's second largest cacao producer. Here, small remaining areas of Atlantic Forest are embedded in a matrix dominated by traditional cacao agroforests, resulting in a landscape mosaic that has proven favorable to the conservation of the region's high biodiversity. We show that current land use dynamics and public policies pose threats but also offer opportunities to conservation and describe a three-pronged landscape conservation strategy, consisting of (i) expansion of the protected areas system, (ii) promotion of productive yet biodiversity-friendly cacao farming practices, and (iii) assistance to land users to implement legally mandated on-farm reserves and voluntary private reserves. We discuss recent experiences concerning the implementation of this strategy, discuss likely future scenarios, and reflect on the applicability of the Bahian experience to biodiversity rich cacao production regions elsewhere in the tropics. © 2011 Springer Science+Business Media B.V.
Economic evaluation of the seabob shrimp, Xiphopenaeus Kroyeri (Heller, 1862), fisheries in Caravelas – BA, Brazil [Avaliação econômica da pesca do camarão sete-barbas, Xiphopenaeus Kroyeri (Heller, 1862), no município de Caravelas – BA, Brasil]
Viana D.F.,University of California at Santa Barbara |
Camargo E.,Conservacao Internacional |
Dutra G.F.,Conservacao Internacional
Boletim do Instituto de Pesca | Year: 2015
The objective of this study was to evaluate the management and economic return of the seabob shrimp (Xiphopenaeus kroyeri) fisheries in Caravelas, Bahia, Brazil. Monitoring data of fisheries landings from October 2010 to November 2011 were analyzed. An increase in the number of vessels that operated in the trolling fisheries in the period subsequent to the season closure was observed, as well as greater total catch compared to the remaining days of the year. Consequently, the price paid for the shrimp to the fisherman dropped 35% compared to the period before the closure, causing an economic loss to the community. An increase of the catch-per-unit-effort (CPUE) was observed in the period following the closure season, as well as a lower cost for shrimp capture, which incentivizes fishing regardless of the lower price. © 2015, Instytut Technologii Drewna. All rights reserved.
Paese A.,Conservacao Internacional |
Paese A.,Federal University of Amapa |
Paglia A.,Conservacao Internacional |
Pinto L.P.,Conservacao Internacional |
And 3 more authors.
Biodiversity and Conservation | Year: 2010
The Brazilian Atlantic Forest is a highly threatened biodiversity hotspot that has been the subject of several complementary conservation assessments and priority-setting initiatives in the last 30 years. Results of these initiatives have relied on distinct types of distribution data for biodiversity features and differ in the objectivity and repeatability of their methodologies. Here we refine earlier priority-setting exercises using the key biodiversity areas (KBA) approach. We evaluate how well these KBAs are represented in the existing protected areas system, prioritize among them, and analyze critical aspects of the KBA methodology in the Brazilian Atlantic Forest context, such as its ability to guide specific conservation strategies. Building upon an extensive database with 1,636 species records and 122 previously identified Important Bird Areas, we demonstrate that conservation assessments in highly fragmented landscapes may be benefited by high resolution species data as is required by the KBA process. We identify 538 KBAs for 141 globally threatened vertebrate species. Prioritizing among these KBA, we highlight the 24 most irreplaceable sites for terrestrial vertebrate species conservation in the Atlantic Forest, based on existing data. © 2010 Springer Science+Business Media B.V.